The Core that Beats for You

Humanity survives behind concrete blast walls and the cutting-edge weapons of Izumo Tech. But the truest weapons are the ones born from the ashes of a tragedy.

Two years ago, Shiori Izumo-the "Phantom Heiress" to the country's largest defense development firm-was left dying in a smoking rubble crater. To save her life, the government bound her failing human frame to a volatile, surviving fragment of Kaiju No. 7's core.

Now Shiori lives as a human weapon, locking the volcanic beast in her soul behind a psychological "iron door." Pushing her limits triggers a catastrophic thermal backlash that threatens to melt her arteries from the inside out. But she doesn't hold the line alone. Soshiro Hoshina, the lethal short-blade Vice-Captain, is the only one who can hear the double rhythm of her heart. He refuses to hunt her; instead, he becomes her tactical anchor, using his cool skin and steady breathing to ground her volcanic fevers.

Meanwhile, a terrifyingly intelligent, adaptive new threat known as Kaiju No. 9 is playing a deadly game of cat-and-mouse-absorbing the vanguard's strikes simply to map their maximum ceilings and engineer an un-trackable apocalypse. To defeat an enemy that actively calculates your upper limits, the Phantom Heiress and her swordsman must break their human boxes entirely, unleashing a forbidden, hybrid evolution to tear No. 9's network into absolute dust.